A white noise machine helps us. It covers up the little noises in the CG at night. We have one that is battery operated. I've also been a big, big fan of Mack's ear plugs. As far as comfort, we used to put a topper on the mattress and that helped some. Once the DW and I started camping sans children, we also tried sleeping one in each bunk. That was REALLY comfortable actually. We had space to spread out. DW could layer in 5 blankets and I could lay in just a sheet and we were both comfortable.